yes, if low could be the core, i would take the front seat out, pass side, lift the carpet and see what the fluid is. go from there.
and i would leave the rug propped up with sticks or what ever and point a box fan at the wet rug bottom to dry it, (maybe pull the back seat bottom to get more rug up, to dry it) baking soda will also kill off any odors, dont vac it up with a regular vac, use a shop vac if possible. baking soda can kill a house vac.